I have a 90 carb on mine, so I think you will like the 115. It is OK most fo the time as I don't tourney fish. I'd check into the motor weight, I think they weigh more. My factory aluminum prop was a 21P aluminum and I'm running a 21P Laser II and it did make a little top end difference, about 2mph speedo, I don't have a GPS. You should be able to turn a bigger wheel with the 115.